1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
juin [17]
3 years ago
9

15-a=20 what is the vaule of a?

Mathematics
2 answers:
torisob [31]3 years ago
5 0

Answer:

a=-5

Step-by-step explanation:

15-a=20

Solve for a.

15-20=a

-5=a

olganol [36]3 years ago
4 0

Answer:

15a=20

a=20/15

a=4/3

ok

You might be interested in
URGENT!!!Can someone give me the answer and explanation plz
mafiozo [28]

Answer: D

Step-by-step explanation: Divide 110 and 1700 to get 15 then multiply that 15 with 110 to get 1600. I hope this helps ;)

7 0
4 years ago
Outside a home, there is a 10-key keypad with the letters A, B, C, D, E, F, G, H, I, and J that can be used to open the garage i
Assoli18 [71]

Answer:

3,628,800 (aka "10!")

Step-by-step explanation:

The first letter in the code can be 10 possible letters.

Since every letter can only be used once, the second letter can only be 9 possible letters.

E.G.: If the first letter is A, the second letter is B-J.

The third letter would be 8 possible letters, than the fourth would be 7, etc.

In math form, figuring out the possible combinations would be written out as so:

10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

An easier way to write this out would be using "10!", which stands for "10 Factorial"

The result of the above equals 3,628,800.

4 0
3 years ago
18.25=4(1.5-3.75x)-.25(4x-5) wat is x?
sdas [7]
The answer is x= - 11/ 16
You can check this by plugging in x for -11/16



5 0
3 years ago
Determine the standard form of the equation of the line that passes through ( -5,0 ) ( 0 ,-9)
insens350 [35]

The general form for a line through two points (a,b) and (c,d) is

(c-a)(y-b)=(d-b)(x-a)

This is better than the slope forms because it works in the no slope case, as does the standard form.

If you haven't seen it before, it works because when (x,y)=(a,b) we get (c-a)(b-b)=(d-b)(a-a), both sides zero, and when (x,y)=(c,d) we get (c-a)(d-b)=(d-b)(c-a), clearly equal sides.

Here we have

(0 - -5)(y - 0) = (-9 - 0)(x - - 5)

5y = -9(x+5)

5y = -9x - 45

9x + 5y = -45

Ironically there are two standards for standard form; one with the constant alone on the right and one with the whole thing equal to zero.  I like the constant alone.

Answer: 9x + 5y = -45

Check:

We check each point is on the line

(-5,0)

9(-5) + 5(0) = -45, good

(0, -9)

9(0) + 5(-9) = -45, good again


5 0
3 years ago
Read 2 more answers
how many times can a rectangle be reflected across an axis of symmetry so that its carries onto itself
Ostrovityanka [42]
2 times, you can fold it without no overlapping on any line
3 0
4 years ago
Read 2 more answers
Other questions:
  • Greg has $250 to spend. He wants to buy a new gaming system that is usually $380 but he knows it is on sale. If there is an 8% s
    8·1 answer
  • Fraction manipulative to reduce 2/8
    6·1 answer
  • How to find the first quartile
    12·2 answers
  • Question number 21 and 22 if possible
    8·1 answer
  • Please help i need both
    12·1 answer
  • The volume of air inside a rubber ball with radius r can be found using the function V(r) = four-thirds pi r cubed. What does V
    11·2 answers
  • Which angle is coterminal with a 635° angle?
    8·2 answers
  • I’m stuck. Need help on this one.
    11·1 answer
  • What is the decimal multiplier to decrease by 39%
    5·1 answer
  • HELP ME PLS MY DOG DIED
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!